refactoring queries code

app/controllers/jobs_controller.rb

@@ -3,23 +3,20 @@ class JobsController < ApplicationController
   before_action :find_user, only: :apply_available
 
   def index
-    @search = params[:search] || ":"
-    @solr = SolrService.new
+    @search = params[:search] || params[:city_id] || params[:industry_id] || ":"
+    solr = SolrService.new(@search)
 
     if params[:city_id]
-      @city = City.find(params[:city_id])
-      @city_name = @city.name
-      @jobs = @solr.query_by_city(@city_name)["docs"]
-      @jobs_count = @solr.query_by_city(@city_name)["numFound"]
+      @jobs = solr.query_by_city["docs"]
+      @jobs_count = solr.query_by_city["numFound"]
     elsif params[:industry_id]
-      @industry = Industry.find(params[:industry_id])
-      @industry_name = @industry.name
-      @jobs = @solr.query_by_industry(@industry_name)["docs"]
-      @jobs_count = @solr.query_by_industry(@industry_name)["numFound"]
+      @jobs = solr.query_by_industry["docs"]
+      @jobs_count = solr.query_by_industry["numFound"]
     else
-      @jobs = @solr.search(@search)["docs"]
-      @jobs_count = @solr.search(@search)["numFound"]
+      @jobs = solr.query_all["docs"]
+      @jobs_count = solr.query_all["numFound"]
     end
+
     @jobs = Kaminari.paginate_array(@jobs).page(params[:page]).per(Settings.job.per_page)
   end
 

app/helpers/job_helper.rb

@@ -4,7 +4,7 @@ module JobHelper
   end
 
   def view_search_result
-    params[:city_id] ? "City: #{@city.name}" :
-                       (params[:industry_id] ? "Industry: #{@industry.name}" : params[:search])
+    params[:city_id] ? "City: #{@jobs[0]["city"]}" :
+                       (params[:industry_id] ? "Industry: #{@jobs[0]["industry"]}" : params[:search])
   end
 end

app/services/solr_service.rb

@@ -2,13 +2,15 @@ require "rsolr"
 require 'benchmark'
 
 class SolrService
-  def initialize
+  def initialize(search_keyword)
     @solr = RSolr.connect(
       url: Settings.solr.connection.server_url,
       read_timeout: Settings.solr.connection.read_timeout,
       open_timeout: Settings.solr.connection.open_timeout,
       retry_503: Settings.solr.connection.retry_503
     )
+
+    @search_keyword = search_keyword
   end
 
   def add_data
@@ -47,29 +49,37 @@ class SolrService
     @solr.commit
   end
 
-  def search(params)
-    response = @solr.get "select", params: {
-      q: "*#{params}*",
-      rows: Job.count
-    }
-    response["response"]
+  def query_all
+    q = "*#{@search_keyword}*"
+    fq = ""
+
+    send_request(q, fq)
   end
 
-  def query_by_city(city_name)
-    city = "city: #{escape_str(city_name)}"
-    response = @solr.get "select", params: {
-      q: "*:*",
-      fq: city,
-      rows: Job.count
-    }
-    response["response"]
+  def query_by_city
+    city = City.find(@search_keyword)
+    @city_name = city.name
+
+    q = "*:*"
+    fq = "city: #{escape_str(@city_name)}"
+
+    send_request(q, fq)
+  end
+
+  def query_by_industry
+    industry = Industry.find(@search_keyword)
+    @industry_name = industry.name
+
+    q = "*:*"
+    fq = "city: #{escape_str(@industry_name)}"
+
+    send_request(q, fq)
   end
 
-  def query_by_industry(industry_name)
-    industry = "industry: #{escape_str(industry_name)}"
+  def send_request(q, fq)
     response = @solr.get "select", params: {
-      q: "*:*",
-      fq: industry,
+      q: q,
+      fq: fq,
       rows: Job.count
     }
     response["response"]